US Patent No. 10,117,331

DISPLAY DEVICE


Patent No. 10,117,331
Issue Date October 30, 2018
Title Display Device
Inventorship Mika Jikumaru, Ohita (JP)
Daisuke Kubota, Kanagawa (JP)
Noriko Miyairi, Kanagawa (JP)
Takaaki Nagata, Kanagawa (JP)
Assignee Semiconductor Energy Laboratory Co., Ltd., (JP)

Claim of US Patent No. 10,117,331

1. A display device comprising:a first substrate comprising a first surface;
a second substrate comprising a second surface; and
a transistor over the first surface,
wherein a first structure having a projection, a second structure having a projection, a black matrix covering the first structure and the second structure, an overcoat layer formed by a polyimide resin, an epoxy resin, or an acrylic resin covering the black matrix, and a color filter are provided over the second surface,
wherein the first surface faces the second surface,
wherein the black matrix has a plurality of projections reflecting the projection of the first structure and the projection of the second structure,
wherein a bottom surface of the black matrix is in direct contact with the first structure and the second structure,
wherein a planar shape of the first structure is different from a planar shape of the second structure, and
wherein the black matrix is a single-layer structure.